ArticleMikrochimica acta2024
A smartphone-based colorimetric assay using Cu-tannic acid nanosheets (Cu-TA NShs) as a laccase-mimicking nanozyme for visual detection of quercetin in vegetables.
Article in Mikrochimica acta, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 25 citations in OpenAlex.
- Integration of Laccase-like Nanozymes and Sensing Strategies for Food Quality and Safety Monitoring.Foods (Basel, Switzerland) · 2026Review
- Laccase-Mimicking Cu-Tannic Acid Nanozyme for Zearalenone Detoxification: Mechanism and Application in Corn Oil.Foods (Basel, Switzerland) · 2026Article
- Metal-Phenolic Networks for Sensing Applications.Biosensors · 2025Review
- Applications of nanomaterials with enzyme-like activity for the detection of phytochemicals and hazardous substances in plant samples.Chinese medicine · 2024Review
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
The interaction of Cu-tannic acid nanosheets (Cu-TA NShs) as nanozyme in a surfactant solution of CTAB under relatively acidic conditions is shown to exhibit a catalytic effect on quercetin (Qur). This catalytic property of Cu-TA NShs, which mimics laccase enzyme with many advantages, has been applied to developing a selective colorimetric sensor for the determination of trace amounts of Qur in vegetable samples. This strategy presents a desirable linear relationship between the absorbance signal intensity and the concentrations of Qur from 0.350 to 32.09 µM with a detection limit (LOD) of 0.064 µM (S/N = 3). The feasibility of the proposed portable colorimetric sensor for in situ analysis of the real samples has been validated with the high-performance liquid chromatography (HPLC) method as reference method, and two-tailed test (t test) statistical analysis certifies good agreement between the results. This enzyme-free and sensitive naked-eye sensor with the smartphone-based color map is promising to provide technical support for the rapid and visual detection of Qur in vegetables.
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Registered trials
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